WO2022207292A1 - Laugenbehälter und wäschebehandlungsgerät - Google Patents
Laugenbehälter und wäschebehandlungsgerät Download PDFInfo
- Publication number
- WO2022207292A1 WO2022207292A1 PCT/EP2022/056498 EP2022056498W WO2022207292A1 WO 2022207292 A1 WO2022207292 A1 WO 2022207292A1 EP 2022056498 W EP2022056498 W EP 2022056498W WO 2022207292 A1 WO2022207292 A1 WO 2022207292A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tub
- connecting flange
- section
- another
- circumferentially
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims description 44
- 230000007704 transition Effects 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims 1
- 230000008439 repair process Effects 0.000 abstract description 9
- 101150114468 TUB1 gene Proteins 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000008719 thickening Effects 0.000 description 5
- 238000005406 washing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/26—Casings; Tubs
- D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
- D06F37/263—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements assembled from at least two elements connected to each other; Connecting or sealing means therefor
Definitions
- the invention relates to a tub for a laundry treatment appliance, having at least two tub parts which are arranged axially adjacent to one another with respect to a longitudinal center axis of the tub and are connected to one another circumferentially in the region of a shell of the tub, with each tub part at one axial end having a radially outward-pointing, circumferentially arranged tub part Connecting flange has, wherein the connecting flanges are connected to one another via at least one circumferentially arranged welded joint.
- the invention also relates to a laundry treatment appliance.
- a laundry treatment appliance in the form of a washing machine or a washer-dryer has a tub in which a laundry drum is rotatably mounted.
- a conventional tub of a front-loading washing machine has two tub parts made of plastic that are arranged axially adjacent to one another with respect to a longitudinal central axis of the tub and are connected to one another in the region of a shell of the tub by screw connections, as is known, for example, from EP 0 854 223 A2.
- the tub parts can be welded to one another all around, as is known, for example, from EP 2 013 399 B1. Compared to the use of screw connections, the welded connection makes it possible to save on connecting and sealing elements and to reduce the assembly time.
- tubs welded in this way are that a ball bearing, via which the laundry drum is rotatably mounted, cannot be replaced separately, for example when water damage occurs. Instead, an assembly must be replaced as a whole, which is made up of the tub, a bearing housing, the laundry drum including the support star and connection. In the event of damage, these conventional tub constructions therefore result in higher repair costs and a negative impact on the environment, since, for example, if the bearing of the laundry drum needs to be replaced, the fully intact and functional components, such as the laundry drum and the tub, are also scrapped .
- a repair solution for a correspondingly welded tub is known from ES 2 238 153 A1.
- One object of the invention is to reduce the repair costs of a laundry treatment appliance that arise in the event of damage.
- a suds container according to the invention for a laundry treatment appliance has at least two suds container parts which are arranged axially adjacent to one another with respect to a longitudinal central axis of the suds container and are connected to one another circumferentially in the area of a casing of the suds container, with each suds container part at one axial end having a connecting flange which points radially outwards and is arranged circumferentially wherein the connecting flanges are connected to one another via at least one circumferentially arranged welded joint, each connecting flange having a circumferentially arranged inner connecting section and a radially outwardly offset and circumferentially arranged outer connecting section, and the two outer connecting sections being connected to one another via the welded joint are.
- the connecting flanges are particularly preferably welded to one another exclusively via their outer connecting sections. If damage occurs to the laundry treatment appliance, the two tub parts can be separated from one another by separating an end section welded to the other connecting flange from at least one outer connecting section or the entire outer connecting section from the remaining connecting flange. For example, a standard tool can be used for severing, eliminating the need for costly manufacture or procurement of special tools. The Lau gen techermaschine can then be removed from each other to repair to be carried out on the laundry treatment device. After that, the two tub parts or their inner connecting sections can be connected to one another again via mechanical connecting means, for example screw connections, so that the tub can continue to be used as a whole.
- the inner connection sections preferably have areas that receive or fix the mechanical connection means. A secure fit of the mechanical connecting means and a secure connection of the two tub parts can thus be provided if the outer connecting sections have previously been severed.
- the fasteners can be standard, such as metric screws, so that no expensive manufacture or procurement of special means is required.
- the invention also makes it possible for the advantages associated with the welded connection between the parts of the suds container, namely the saving of connecting and sealing elements and the reduction in assembly time, to continue to be realized in ongoing series production.
- a sealing ring can be arranged between the inner connecting sections, the diameter of which essentially corresponds to the diameter of the shell of the tub. This ensures that the tub is tightly sealed even after the repair has been carried out.
- the outer connec tion sections radially outward to the inner connection sections are during the separation process for releasing the connection between the parts of the tub does not damage the sealing surfaces in contact with the sealing ring. Therefore, these sealing surfaces do not have to be reworked after the cutting process, which simplifies the repair work.
- Each connecting portion is formed into a ring shape, with a diameter of the inner connecting portions being formed smaller than a diameter of the outer connecting portions.
- the fact that the respective outer connecting section is offset radially on the outside relative to the respective inner connecting section means within the scope of the invention that the outer connecting section is arranged within an imaginary hollow circular cylinder which encloses a smaller imaginary hollow circular cylinder radially on the outside in which the inner connecting section is arranged. This makes it clear that the inner connecting section and the outer connecting section can be arranged in a plane perpendicular to the longitudinal center axis of the outer tub or axially offset with respect to this longitudinal center axis.
- the tub can be formed conventionally apart from the connecting flanges of its two tub parts.
- the welded joint is arranged with respect to the longitudinal central axis of the tub so as to be axially offset in relation to the inner connecting portions.
- the circumferentially arranged welded connection is arranged even further away from the inner connecting sections, which means that it is even more reliable to prevent the inner connecting sections, in particular sealing surfaces arranged thereon for contacting a sealing ring, from becoming damaged during the severing process for releasing the connection between the tub parts be done.
- the outer connecting section of at least one connecting flange is connected to the inner connecting section of this connecting flange via at least one sleeve-shaped transition section of this connecting flange, the transition section being spaced radially outwards from the shell of the tub.
- a protective element can also be inserted into the cavity while the separating process is being carried out, with which the separating tool comes into contact after the separating process has been successfully completed and which ensures direct contact between the separating tool and tub jacket reliably prevented.
- the inner connecting section of one connecting flange has a sealing surface which faces the other connecting flange and on which at least one ring-shaped sealing groove for partially accommodating a sealing ring is arranged circumferentially.
- the sealing surface and its sealing groove provide an interface for the sealing ring on an inner connec tion section of the connecting flange, which ensures proper seating of the sealing ring during assembly and operation of the tub.
- the inner connecting section of the other connecting flange has a sealing surface facing one connecting flange, on which at least one ring-shaped sealing projection for contacting the sealing ring is arranged circumferentially.
- the sealing surface and its sealing projection provide an interface for the sealing ring on the other inner connecting section of the connecting flange, with the sealing ring being pushed by the sealing projection into the sealing groove on the inner connecting section of one connecting flange, which increases the tightness of the tub thus achieved comes along.
- the tub has at least one sealing ring which can be arranged between the two inner connecting sections.
- the sealing ring is partially or fully made of an elastomer and has a diameter that corresponds to that of the shell of the tub.
- the sealing ring is a spare part that can be placed on the connecting flanges, share after the separation process for releasing the connection between the tub has been performed. Before the sealing ring is not arranged on the connecting flanges.
- the tub has at least one screw, by means of which the two inner connecting sections can be screwed together.
- the tub can have at least one nut that can be screwed onto the screw.
- the tub has several screws and possibly nuts that can be arranged circumferentially offset on the connecting flanges.
- the screws and possibly nuts are spare parts that can be arranged on the connec tion flanges after the separating operation for releasing the connection between the tub parts has been carried out.
- the screws are preferably not arranged on the connecting flanges.
- the inner connecting sections can also be connected to each other with the screws in addition to the welded connection of the two outer connecting sections, whereby the welded connection is supported and the connection of the two tub parts can withstand even greater loads.
- the tub is at least partially made of a plastic or a plastic composite material.
- the plastic composite material can be a plastic fiber composite material, for example.
- a laundry treatment appliance according to the invention has a tub that is designed according to one of the above-mentioned configurations or a combination of at least two of these configurations.
- the laundry treatment device can be designed as a front loader.
- the laundry treatment appliance can be a washing machine or a washer-dryer.
- FIG. 2 shows a schematic sectional view of the tub shown in FIG. 1 with a screw connection.
- Fig. 1 shows a schematic sectional view of a detail of afindsbei game for a tub 1 according to the invention for a laundry treatment device, not shown.
- the tub 1 is at least partially made of a plastic or a plastic composite material.
- the tub 1 has two tub parts 3 and 4 which are arranged axially adjacent to one another with respect to a central longitudinal axis (not shown) of the tub 1 and are connected to one another circumferentially in the region of a casing 2 of the tub 1.
- Each tub part 3 or 4 has a radially outwardly pointing tubing at one axial end , Circumferentially arranged connecting flange 5 and 6 respectively.
- the connecting flanges 5 and 6 are connected to one another via a circumferentially arranged weld joint 7 .
- Each connecting flange 5 or 6 has a circumferentially arranged inner connec tion section 8 or 9 and a radially outwardly offset to and circumferentially arranged outer connecting section 10 or 11.
- the two outer connec tion sections 10 and 11 are connected to each other via the weld 7.
- the welded joint 7 is arranged axially offset relative to the inner connecting sections 8 and 9 with respect to the longitudinal central axis of the outer tub 1 .
- the outer connecting section 10 of the connecting flange 5 is connected via a sleeve-shaped transition section 12 of the connecting flange 5 to the inner connec tion section 8 of the connecting flange 5 .
- the transition section 12 is spaced radially outwards from the casing 2 of the outer tub 1 .
- the outer connecting portion 11 of the connecting flange 6, however, is itself sleeve-shaped and has in the embodiment shown a rib 13 arranged around the outside.
- the inner connecting portion 9 of the connecting flange 6 is formed with a circumferentially arranged thickening 14, on the other connecting flange 5 facing away from the axial end face 15 a circumferentially arranged annular groove 16 is formed.
- the inner connecting portion 8 of the connec tion flange 5 is also asbil det with a peripheral thickening 17 arranged.
- the inner connecting portion 9 of the connecting flange 6 has a connec tion flange 5 facing arranged sealing surface 18 on which a ring-shaped formed sealing groove 19 for partially receiving a sealing ring shown in Fig. 2 is arranged to continuously.
- the inner connecting portion 10 of the connecting flange 5 has a connec tion flange 6 facing arranged sealing surface 20 on which an annular you device projection 21 for contacting the sealing ring shown in Fig. 2 is arranged circumferentially.
- FIG. 2 shows a schematic sectional illustration of the tub 1 shown in FIG. 1 after a separating process has been carried out along the separating line shown in FIG.
- the two tub parts 3 and 4 or their inner connecting sections 8 and 9 have been connected to one another circumferentially by means of a plurality of screws 23, only one of these screws 23 being shown in FIG.
- a sealing ring 24 has been arranged between the two inner connecting sections 8 and 9 before this screwing of the two inner connecting sections 8 and 9 together.
- a head 25 of the screw 23 is supported on the axial end face 15 of the thickening 14 of the inner connecting section 9 .
- a shank 26 of the screw 23 can be designed to be thread-cutting and thus screwed into the inner connecting section 8 .
- a not shown on the free end of the shaft 26 nut to be unscrewed.
- the inner connection section 9 can be drilled through in advance in the region of a bottom of the annular groove 16 by means of a drill (not shown).
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280025350.6A CN117098888A (zh) | 2021-04-01 | 2022-03-14 | 碱液容器和衣物处理设备 |
EP22715973.8A EP4314404A1 (de) | 2021-04-01 | 2022-03-14 | Laugenbehälter und wäschebehandlungsgerät |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021203346.6A DE102021203346A1 (de) | 2021-04-01 | 2021-04-01 | Laugenbehälter und Wäschebehandlungsgerät |
DE102021203346.6 | 2021-04-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022207292A1 true WO2022207292A1 (de) | 2022-10-06 |
Family
ID=81306688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/056498 WO2022207292A1 (de) | 2021-04-01 | 2022-03-14 | Laugenbehälter und wäschebehandlungsgerät |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4314404A1 (de) |
CN (1) | CN117098888A (de) |
DE (1) | DE102021203346A1 (de) |
WO (1) | WO2022207292A1 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0789104A1 (de) * | 1996-01-31 | 1997-08-13 | Balay S.A. | Schliessvorrichtung eines Kunststoff-Laugenbehälters einer Waschmaschine |
EP0854223A2 (de) | 1997-01-21 | 1998-07-22 | Balay S.A. | Schliessvorrichtung eines Kunststoff-Laugenbehälters einer Waschmaschine |
ES2238153A1 (es) | 2003-08-14 | 2005-08-16 | Bsh Electrodomesticos España S.A. | Sistema de apertura de una cuba de lavadora. |
WO2007129352A1 (en) * | 2006-05-04 | 2007-11-15 | Meccanica Generale S.R.L. | System used to fix the two semi-shells of plastic tanks for washers, washer/dryer combos and similar appliances. |
EP2013399B1 (de) | 2006-04-12 | 2010-05-26 | BSH Bosch und Siemens Hausgeräte GmbH | Bottich für waschmaschine |
EP3575476A1 (de) * | 2018-06-01 | 2019-12-04 | Lg Electronics Inc. | Laugenbehälter für eine waschmaschine |
-
2021
- 2021-04-01 DE DE102021203346.6A patent/DE102021203346A1/de active Pending
-
2022
- 2022-03-14 CN CN202280025350.6A patent/CN117098888A/zh active Pending
- 2022-03-14 EP EP22715973.8A patent/EP4314404A1/de active Pending
- 2022-03-14 WO PCT/EP2022/056498 patent/WO2022207292A1/de active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0789104A1 (de) * | 1996-01-31 | 1997-08-13 | Balay S.A. | Schliessvorrichtung eines Kunststoff-Laugenbehälters einer Waschmaschine |
EP0854223A2 (de) | 1997-01-21 | 1998-07-22 | Balay S.A. | Schliessvorrichtung eines Kunststoff-Laugenbehälters einer Waschmaschine |
ES2238153A1 (es) | 2003-08-14 | 2005-08-16 | Bsh Electrodomesticos España S.A. | Sistema de apertura de una cuba de lavadora. |
ES2238153B1 (es) * | 2003-08-14 | 2008-06-16 | Bsh Electrodomesticos España S.A. | Sistema de apertura de una cuba de lavadora. |
EP2013399B1 (de) | 2006-04-12 | 2010-05-26 | BSH Bosch und Siemens Hausgeräte GmbH | Bottich für waschmaschine |
WO2007129352A1 (en) * | 2006-05-04 | 2007-11-15 | Meccanica Generale S.R.L. | System used to fix the two semi-shells of plastic tanks for washers, washer/dryer combos and similar appliances. |
EP3575476A1 (de) * | 2018-06-01 | 2019-12-04 | Lg Electronics Inc. | Laugenbehälter für eine waschmaschine |
Also Published As
Publication number | Publication date |
---|---|
DE102021203346A1 (de) | 2022-10-06 |
CN117098888A (zh) | 2023-11-21 |
EP4314404A1 (de) | 2024-02-07 |
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